Free online tool

Free Online CAD Viewer for

Robotics & Automation

Secure, Fast & Cloud-Based

CAD files in robotics help in modeling manipulators, sensor housings, grippers, and base frames. These designs enable engineers to simulate real-world motion, check for collisions, and design within constrained workspaces. CAD also supports integration with electrical systems and control components, ensuring mechanical and electronic alignment.

Private uploads
Auto-delete in 24hrs
Up to 300 MB

Drag & drop your 3D files here

or click to browse files

Supported formats: STEP (.step, .stp), IGES (.igs, .iges), STL (.stl), PLY (.ply), OFF (.off), BREP (.brp, .brep), OBJ (.obj)

Don't have a file? Try a sample:

Need a proper native CAD file built from scratch?

Vetted designers deliver production-ready files in 24 hours — SolidWorks, Revit, Fusion 360 & more.

ROBOTICS & AUTOMATION CAD VIEWER

Open robotics CAD files instantly in your browser

Review engine parts, body assemblies, and supplier-submitted CAD files without installing heavy desktop software.

Why browser based?

No CAD installFaster reviewsEasier stakeholder accessPrivate uploads

How It Works

View any robotics & automation CAD file in three simple steps — no signup, no software.

STEP 1

Upload

Drag & drop or browse to upload your CAD file. We support 50+ formats.

STEP 2

Preview

Instantly view your 3D model with measurement tools, cross-sections, and annotations.

STEP 3

Share & Convert

Generate a shareable link or convert to another format with one click.

Need a proper native CAD file built from scratch?

Vetted designers deliver production-ready files in 24 hours — SolidWorks, Revit, Fusion 360 & more.

Design review

How robotics & automation teams use CAD viewers for design review

In robotics & automation, teams use CAD viewers to inspect models, validate interfaces, and align stakeholders during reviews and handoffs. A browser-based viewer makes it easier to open files quickly, inspect geometry, and keep discussions anchored to the same 3D model without specialized desktop setups.

What file formats are supported?

Marathon OS supports common 3D exchange formats used across industry workflows, including STEP, IGES, STL, PLY, OFF, and BREP. These formats help teams share engineering geometry and meshes across different tools while keeping reviews fast and accessible.

STEP files

Used for exchanging precise 3D engineering geometry and assemblies across tools and suppliers.

IGES files

Common for surface and geometry exchange when teams collaborate across different CAD systems.

STL files

Useful for mesh-based previews and review workflows (especially prototyping and fabrication contexts).

BREP files

Helpful for inspecting boundary-representation solids and engineering geometry online.

PLY and OFF files

Useful for polygon-based model inspection and technical visualization workflows.

Can non-CAD stakeholders access 3D models without a CAD license?

Yes. Not every stakeholder needs a full CAD seat, but many still need visibility for reviews, procurement, QA, operations, or field work. Marathon OS gives non-CAD roles a simpler way to open and inspect models in a browser, reducing reliance on screenshots, PDFs, and intermediaries.

Who uses CAD daily
  • Robotics Engineers
  • Mechatronics Designers
  • Assembly Planners
Often needs CAD access
  • Maintenance Staff
  • Line Operators
  • Project Managers
Workflow

How teams review CAD files without heavy desktop software

Instead of routing every model through a CAD specialist or dedicated workstation, teams can upload files to Marathon OS and preview them online. This keeps cross-functional reviews moving and reduces delays caused by software installs, license access, or high-performance hardware requirements.

Security and access control

Many industry CAD files contain sensitive IP. Marathon OS keeps uploads private and automatically deletes uploaded files after 24 hours. That makes it practical for quick review when teams want lower friction and tighter handling of shared models.

Private by defaultAuto-delete in 24hrsEncrypted uploads

Why teams choose Marathon OS

No installation required

No software installation required (review in browser)

Supports multiple formats

Supports common exchange formats (STEP/IGES) plus mesh formats (STL/PLY/OFF) and solids (BREP)

Fast online preview

Fast online preview for technical review discussions

Cloud-based & secure

Private uploads with automatic 24-hour deletion

Built for your workflow

Better access for non-CAD stakeholders across the workflow

Industry spotlight

Role of CAD file in Robotics & Automation

CAD files in robotics help in modeling manipulators, sensor housings, grippers, and base frames. These designs enable engineers to simulate real-world motion, check for collisions, and design within constrained workspaces. CAD also supports integration with electrical systems and control components, ensuring mechanical and electronic alignment.

Common CAD File Formats

STEPIGESSTLOBJ
robotics-and-automation

Robotics & Automation CAD Model Preview

STEP · IGES · STL

Robotics & Automation Design Library

Explore high-quality design inspirations curated for the Robotics & Automation.

Gripper / End-effector for Robotic Arms - Servo Operated
Gripper / End-effector for Robotic Arms - Servo Operated
Limit Switch, Model: OMRON D3V-6G6M-3C24-K
Limit Switch, Model: OMRON D3V-6G6M-3C24-K
Precision Mechanical Component for Industrial Applications
Precision Mechanical Component for Industrial Applications
High-Precision Weighing Module with Stainless Steel Housing
High-Precision Weighing Module with Stainless Steel Housing
Brushless Repeat Drive MK2 CAD Model
Brushless Repeat Drive MK2 CAD Model
SIM7000 Series USB Dongle Component Layout
SIM7000 Series USB Dongle Component Layout
MELSERVO J5 Series HK-KT43WK 400W Motor Simplified Geometry
MELSERVO J5 Series HK-KT43WK 400W Motor Simplified Geometry
Nichibo LD5B-12160E-R-CE DC Motor with Mounting Specifications
Nichibo LD5B-12160E-R-CE DC Motor with Mounting Specifications
Ultralight Starshade Structural Design Concept for Aerospace Applications
Ultralight Starshade Structural Design Concept for Aerospace Applications
GT2 Pulley 6mm Width 60 Teeth 20mm Bore Diameter
GT2 Pulley 6mm Width 60 Teeth 20mm Bore Diameter
28BYJ-48 Stepper Motor Technical Model
28BYJ-48 Stepper Motor Technical Model
Actuator Mechanism Variants for Stewart Platform Adaptive Modules
Actuator Mechanism Variants for Stewart Platform Adaptive Modules
Siemens S7-1200 PLC Solid Model for Engineering Applications
Siemens S7-1200 PLC Solid Model for Engineering Applications
Compact 9V Voltage Regulator Module with 4.5A Output Current
Compact 9V Voltage Regulator Module with 4.5A Output Current
4 Axis CNC Machine DIY Project for Home and Workshop
4 Axis CNC Machine DIY Project for Home and Workshop
2022 FRC Team 6418 Competition Robot CAD Model
2022 FRC Team 6418 Competition Robot CAD Model
Two Lever Mechanism CAD Model
Two Lever Mechanism CAD Model
Industrial Mechanical Component CAD Model
Industrial Mechanical Component CAD Model
Precision Mechanical Component CAD Model
Precision Mechanical Component CAD Model
Industrial Packaging Machine CAD Model
Industrial Packaging Machine CAD Model
View all designs

FAQ

Answers for teams evaluating browser-based CAD review with Marathon OS.

  • What CAD file formats are commonly used in robotics & automation?

    Teams often exchange engineering geometry using STEP and IGES, and use mesh/visualization formats like STL, PLY, or OFF for review. Marathon OS supports STEP, IGES, STL, PLY, OFF, and BREP for in-browser viewing.

  • Can I open STEP and IGES files online without CAD software?

    Yes. Marathon OS lets you upload and preview STEP and IGES files in a browser—useful when reviewers do not need full authoring tools.

  • Who typically needs access to CAD files but doesn’t have CAD licenses?

    Commonly: Maintenance Staff, Line Operators, Project Managers. These roles often need visibility for decisions, reviews, or execution, even if they don’t edit CAD.

  • What’s the maximum upload size?

    The viewer messaging on Marathon OS states uploads up to 300 MB. For larger datasets, teams typically split assemblies or use simplified review files.

  • Will my uploaded files stay private?

    Marathon OS states uploads are private and automatically deleted after 24 hours, which helps reduce long-term exposure of shared files.

  • Does this work without downloads or plugins?

    Yes. The viewer is positioned as browser-based, so teams can preview models without installing desktop software or browser plugins.

  • Can I use this for faster cross-team reviews?

    Yes. A single 3D preview helps keep discussions aligned and reduces time spent sharing screenshots or exporting multiple view files.

  • Is Marathon OS free to try?

    The site positions the viewer as free to use for online preview, with demo and product options available depending on team needs.

Marathon-OS Design Hub

Everything you need to design faster, smarter, and with more impact.

Qidi Q1 Pro Btt Microprobe Mount V1 1 | 3D CAD Engineering Model
Qidi Q1 Pro Btt Microprobe Mount V1 1 | 3D CAD Engineering Model
3D Printable Chain 1 | Professional CAD Design
3D Printable Chain 1 | Professional CAD Design
Gyroelongated Pentagonal Birotunda 1 | 3D CAD Engineering Model
Gyroelongated Pentagonal Birotunda 1 | 3D CAD Engineering Model
Piggy Bank Vending Machine with Coin Recognition and Candy Dispenser
Piggy Bank Vending Machine with Coin Recognition and Candy Dispenser
Tufted Box | 3D Engineering Design File
Tufted Box | 3D Engineering Design File
Tripod 1 4 20 1 6Mm Styled Board Mount 1 | 3D CAD Engineering Model
Tripod 1 4 20 1 6Mm Styled Board Mount 1 | 3D CAD Engineering Model
Nextruder Heater Block CAD Model
Nextruder Heater Block CAD Model
SUNLU Filament Spool for 3D Printing
SUNLU Filament Spool for 3D Printing
M!N!Mal 0 Ch - Raspberry Pi Zero 2 / Banana Pi M2 Case With Heatsink & Cooling | 3D Engineering Design File
M!N!Mal 0 Ch - Raspberry Pi Zero 2 / Banana Pi M2 Case With Heatsink & Cooling | 3D Engineering Design File
Anycubic Photon Mono 4 Drip Hanger 1 | Industrial CAD Design
Anycubic Photon Mono 4 Drip Hanger 1 | Industrial CAD Design
Flower Jar Cap 1 | 3D CAD Engineering Model
Flower Jar Cap 1 | 3D CAD Engineering Model
Tool Box Build Out 3D Print Tekton Socket Racks 1 | 3D CAD Engineering Model
Tool Box Build Out 3D Print Tekton Socket Racks 1 | 3D CAD Engineering Model
Rodholder 1 | 3D CAD Engineering Model
Rodholder 1 | 3D CAD Engineering Model
3D Printer - Downloadable CAD Representation
3D Printer - Downloadable CAD Representation
Plastic Bottle Recycling Filament for 3D Printing
Plastic Bottle Recycling Filament for 3D Printing
Bambu Lab P1S Mockup 1 | Professional CAD Design
Bambu Lab P1S Mockup 1 | Professional CAD Design
View all designs

Review robotics & automation CAD files online without installing CAD software

Open CAD files in your browser, inspect 3D geometry quickly, and give every stakeholder easier access to the models they need.

Upload CAD File
For automotive teams

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for your supply chain?

Marathon matches you with certified automotive CAD designers who understand GD&T, DFMEA, and production‑tolerancing — without the overhead of hiring a full‑time engineer.

CATIA V5 / V6NX / SiemensGD&T CertifiedSTEP / IGESDrawing Packs
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